1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) The Exim Maintainers 2020 - 2024 */
6 /* Copyright (c) University of Cambridge 1995 - 2018 */
7 /* See the file NOTICE for conditions of use and distribution. */
8 /* SPDX-License-Identifier: GPL-2.0-or-later */
11 /* Prototypes for functions that appear in various modules. Gathered together
12 to avoid having a lot of tiddly little headers with only a couple of lines in
13 them. However, some functions that are used (or not used) by utility programs
14 are in in fact in separate headers. */
24 std_dh_prime_default(void);
26 std_dh_prime_named(const uschar *);
28 extern uschar * tls_cert_crl_uri(void *, uschar * mod);
29 extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
30 extern uschar * tls_cert_issuer(void *, uschar * mod);
31 extern uschar * tls_cert_not_before(void *, uschar * mod);
32 extern uschar * tls_cert_not_after(void *, uschar * mod);
33 extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
34 extern uschar * tls_cert_serial_number(void *, uschar * mod);
35 extern uschar * tls_cert_signature(void *, uschar * mod);
36 extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
37 extern uschar * tls_cert_subject(void *, uschar * mod);
38 extern uschar * tls_cert_subject_altname(void *, uschar * mod);
39 extern uschar * tls_cert_version(void *, uschar * mod);
41 extern uschar * tls_cert_der_b64(void * cert);
42 extern uschar * tls_cert_fprt_md5(void *);
43 extern uschar * tls_cert_fprt_sha1(void *);
44 extern uschar * tls_cert_fprt_sha256(void *);
46 extern void tls_clean_env(void);
47 extern BOOL tls_client_start(client_conn_ctx *, smtp_connect_args *,
48 void *, tls_support *, uschar **);
49 extern BOOL tls_client_adjunct_start(host_item *, client_conn_ctx *,
50 const uschar *, uschar **);
51 extern void tls_client_creds_reload(BOOL);
53 extern void tls_close(void *, int);
54 extern BOOL tls_could_getc(void);
55 extern void tls_daemon_init(void);
56 extern int tls_daemon_tick(void);
57 extern BOOL tls_dropprivs_validate_require_cipher(BOOL);
58 extern BOOL tls_export_cert(uschar *, size_t, void *);
59 extern int tls_feof(void);
60 extern int tls_ferror(void);
61 extern uschar *tls_field_from_dn(uschar *, const uschar *);
62 extern void tls_free_cert(void **);
63 extern int tls_getc(unsigned);
64 extern uschar *tls_getbuf(unsigned *);
65 extern void tls_get_cache(unsigned);
66 extern BOOL tls_hasc(void);
67 extern BOOL tls_import_cert(const uschar *, void **);
68 extern BOOL tls_is_name_for_cert(const uschar *, void *);
70 extern BOOL tls_openssl_options_parse(uschar *, long *);
72 extern int tls_read(void *, uschar *, size_t);
73 extern int tls_server_start(uschar **);
74 extern void tls_shutdown_wr(void *);
75 extern BOOL tls_smtp_buffered(void);
76 extern int tls_ungetc(int);
77 #if defined(EXIM_HAVE_INOTIFY) || defined(EXIM_HAVE_KEVENT)
78 extern void tls_watch_discard_event(int);
79 extern void tls_watch_invalidate(void);
81 extern int tls_write(void *, const uschar *, size_t, BOOL);
82 extern uschar *tls_validate_require_cipher(void);
83 extern gstring *tls_version_report(gstring *);
86 extern int tlsa_lookup(const host_item *, dns_answer *, BOOL);
89 #endif /*DISABLE_TLS*/
92 /* Everything else... */
94 extern acl_block *acl_read(uschar *(*)(void), uschar **);
95 extern int acl_check(int, const uschar *, uschar *, uschar **, uschar **);
96 extern uschar *acl_current_verb(void);
97 extern int acl_eval(int, uschar *, uschar **, uschar **);
98 extern uschar *acl_standalone_setvar(const uschar *, BOOL);
100 extern tree_node *acl_var_create(uschar *);
101 extern void acl_var_write(uschar *, uschar *, void *);
102 extern void add_driver_info(driver_info **, const driver_info *, size_t);
105 extern void assert_no_variables(void *, int, const char *, int);
106 extern int auth_call_pwcheck(uschar *, uschar **);
107 extern int auth_call_saslauthd(const uschar *, const uschar *,
108 const uschar *, const uschar *, uschar **);
109 extern int auth_check_serv_cond(auth_instance *);
110 extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
111 extern int auth_client_item(void *, auth_instance *, const uschar **,
112 unsigned, int, uschar *, int);
115 extern int auth_get_data(uschar **, const uschar *, int);
116 extern int auth_get_no64_data(uschar **, uschar *);
117 extern int auth_prompt(const uschar *);
118 extern int auth_read_input(const uschar *);
119 extern gstring * auth_show_supported(gstring *);
120 extern uschar *authenticator_current_name(void);
122 extern gstring *authres_smtpauth(gstring *);
124 extern uschar *b64encode(const uschar *, int);
125 extern uschar *b64encode_taint(const uschar *, int, const void *);
126 extern int b64decode(const uschar *, uschar **, const void *);
127 extern int bdat_getc(unsigned);
128 extern uschar *bdat_getbuf(unsigned *);
129 extern BOOL bdat_hasc(void);
130 extern int bdat_ungetc(int);
131 extern void bdat_flush_data(void);
133 extern void bits_clear(unsigned int *, size_t, int *);
134 extern void bits_set(unsigned int *, size_t, int *);
136 extern void cancel_cutthrough_connection(BOOL, const uschar *);
137 extern gstring *cat_file(FILE *, gstring *, uschar *);
138 extern gstring *cat_file_tls(void *, gstring *, uschar *);
139 extern int check_host(void *, const uschar *, const uschar **, uschar **);
140 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
141 extern pid_t child_open_exim_function(int *, const uschar *);
142 extern pid_t child_open_exim2_function(int *, uschar *, uschar *,
144 extern pid_t child_open_function(uschar **, uschar **, int,
145 int *, int *, BOOL, const uschar *);
146 extern pid_t child_open_uid(const uschar **, const uschar **, int,
147 uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
148 extern BOOL cleanup_environment(void);
149 extern void cutthrough_data_puts(uschar *, int);
150 extern void cutthrough_data_put_nl(void);
151 extern uschar *cutthrough_finaldot(void);
152 extern BOOL cutthrough_flush_send(void);
153 extern BOOL cutthrough_headers_send(void);
154 extern BOOL cutthrough_predata(void);
155 extern void release_cutthrough_connection(const uschar *);
157 extern void daemon_go(void);
158 #ifndef COMPILE_UTILITY
159 extern ssize_t daemon_client_sockname(struct sockaddr_un *, uschar **);
160 extern ssize_t daemon_notifier_sockname(struct sockaddr_un *);
163 #ifdef EXPERIMENTAL_DCC
164 extern int dcc_process(uschar **);
167 extern void debug_logging_activate(const uschar *, const uschar *);
168 extern void debug_logging_from_spool(const uschar *);
169 extern void debug_logging_stop(BOOL);
170 extern void debug_print_argv(const uschar **);
171 extern void debug_print_ids(uschar *);
172 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
173 extern void debug_print_string(uschar *);
174 extern void debug_print_tree(const char *, tree_node *);
175 extern void debug_vprintf(int, const char *, va_list);
176 extern void debug_pretrigger_setup(const uschar *);
177 extern void debug_pretrigger_discard(void);
178 extern void debug_print_socket(int);
179 extern void debug_trigger_fire(void);
181 extern void decode_bits(unsigned int *, size_t, int *,
182 const uschar *, bit_table *, int, uschar *, int);
183 extern void delete_pid_file(void);
184 extern void deliver_local(address_item *, BOOL);
185 extern address_item *deliver_make_addr(const uschar *, BOOL);
186 extern void delivery_log(int, address_item *, int, uschar *);
187 extern int deliver_message(const uschar *, BOOL, BOOL);
188 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
189 extern void deliver_set_expansions(address_item *);
190 extern int deliver_split_address(address_item *);
191 extern void deliver_succeeded(address_item *);
193 extern void delivery_re_exec(int);
195 extern void die_tainted(const uschar *, const uschar *, int);
196 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
197 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
198 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
199 extern uschar *dns_build_reverse(const uschar *);
200 extern time_t dns_expire_from_soa(dns_answer *, int);
201 extern void dns_init(BOOL, BOOL, BOOL);
202 extern BOOL dns_is_aa(const dns_answer *);
203 extern BOOL dns_is_secure(const dns_answer *);
204 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
205 extern void dns_pattern_init(void);
206 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
207 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
208 extern uschar *dns_text_type(int);
209 extern void dscp_list_to_stream(FILE *);
210 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
212 extern void enq_end(uschar *);
213 extern BOOL enq_start(uschar *, unsigned);
214 #ifndef DISABLE_EVENT
215 extern uschar *event_raise(const uschar *, const uschar *, const uschar *, int *);
216 extern void msg_event_raise(const uschar *, const address_item *);
219 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
220 extern const uschar * exim_errstr(int);
221 extern void exim_exit(int) NORETURN;
222 extern void exim_gettime(struct timeval *);
223 extern void exim_nullstd(void);
224 extern void exim_setugid(uid_t, gid_t, BOOL, const uschar *);
225 extern void exim_underbar_exit(int) NORETURN;
226 extern void exim_wait_tick(struct timeval *, int);
227 extern int exp_bool(address_item *,
228 const uschar *, const uschar *, unsigned, uschar *, BOOL bvalue,
229 const uschar *, BOOL *);
230 extern BOOL expand_check_condition(const uschar *, const uschar *, const uschar *);
231 extern uschar *expand_file_big_buffer(const uschar *);
232 extern uschar *expand_string(uschar *); /* public, cannot make const */
233 extern const uschar *expand_string_2(const uschar *, BOOL *);
234 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
235 extern uschar *expand_getkeyed(const uschar *, const uschar *);
237 extern uschar *expand_hide_passwords(uschar * );
238 extern uschar *expand_string_copy(const uschar *);
239 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
240 extern void modify_variable(uschar *, void *);
242 extern BOOL fd_ready(int, time_t);
243 extern BOOL filter_runtest(int, const uschar *, BOOL, BOOL);
245 extern uschar * fn_hdrs_added(void);
246 extern void force_fd(int, int);
248 extern void header_add(int, const char *, ...);
249 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
250 extern int header_checkname(header_line *, BOOL);
251 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
252 extern int host_address_extract_port(uschar *);
253 extern uschar *host_and_ident(BOOL);
254 extern int host_aton(const uschar *, int *);
255 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
256 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
257 extern void host_build_log_info(void);
258 extern void host_build_sender_fullhost(void);
259 extern int host_find_byname(host_item *, const uschar *, int,
260 const uschar **, BOOL);
261 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
262 uschar *, const dnssec_domains *, const uschar **, BOOL *);
263 extern ip_address_item *host_find_interfaces(void);
264 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
265 extern BOOL host_is_tls_on_connect_port(int);
266 extern int host_item_get_port(host_item *);
267 extern void host_mask(int, int *, int);
268 extern int host_name_lookup(void);
269 extern int host_nmtoa(int, const int *, int, uschar *, int);
270 extern uschar *host_ntoa(int, const void *, uschar *, int *);
271 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
273 extern uschar *imap_utf7_encode(uschar *, const uschar *,
274 uschar, uschar *, uschar **);
276 extern void invert_address(uschar *, uschar *);
277 extern int ip_addr(void *, int, const uschar *, int);
278 extern int ip_bind(int, int, uschar *, int);
279 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
280 extern int ip_connectedsocket(int, const uschar *, int, int,
281 int, host_item *, uschar **, const blob *);
282 extern int ip_get_address_family(int);
283 extern void ip_keepalive(int, const uschar *, BOOL);
284 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
285 extern int ip_socket(int, int);
287 extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
288 extern int ip_unixsocket(const uschar *, uschar **);
289 extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
291 extern int ipv6_nmtoa(int *, uschar *);
293 extern const uschar *local_part_quote(const uschar *);
294 extern int log_open_as_exim(const uschar * const);
295 extern void log_close_all(void);
296 extern const lookup_info * lookup_with_acq_num(unsigned);
297 #ifdef LOOKUP_MODULE_DIR
298 extern BOOL lookup_one_mod_load(const uschar *, uschar **);
302 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
303 extern BOOL macro_read_assignment(uschar *);
304 extern uschar *macros_expand(int, int *, BOOL *);
305 extern void mainlog_close(void);
306 #ifdef WITH_CONTENT_SCAN
307 extern int malware(const uschar *, BOOL, int);
308 extern int malware_in_file(const uschar *);
309 extern void malware_init(void);
310 extern gstring * malware_show_supported(gstring *);
312 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
313 unsigned int *, int, int, const uschar **);
314 extern int match_address_list_basic(const uschar *, const uschar **, int);
315 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
316 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
317 const uschar *, const uschar **);
318 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
319 unsigned int *, int, BOOL, const uschar **);
320 extern int match_check_string(const uschar *, const uschar *, int, mcs_flags,
323 extern void message_start(void);
324 extern void message_tidyup(void);
325 extern void md5_end(md5 *, const uschar *, int, uschar *);
326 extern void md5_mid(md5 *, const uschar *);
327 extern void md5_start(md5 *);
328 extern void millisleep(int);
329 #ifdef WITH_CONTENT_SCAN
330 struct mime_boundary_context;
331 extern int mime_acl_check(uschar *acl, FILE *f,
332 struct mime_boundary_context *, uschar **, uschar **);
333 extern int mime_decode(const uschar **);
334 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
335 extern int mime_regex(const uschar **, BOOL);
336 extern void mime_set_anomaly(int);
339 extern gstring *misc_mod_authres(gstring *);
340 extern int misc_mod_conn_init(const uschar *, const uschar *);
341 extern misc_module_info * misc_mod_find(const uschar * modname, uschar **);
342 extern misc_module_info * misc_mod_findonly(const uschar * modname);
343 extern int misc_mod_msg_init(void);
344 extern void misc_mod_smtp_reset(void);
346 extern uschar *moan_check_errorcopy(const uschar *);
347 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
349 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
350 extern BOOL moan_send_message(const uschar *, int, error_block *eblock,
351 header_line *, FILE *, uschar *);
352 extern void moan_tell_someone(uschar *, address_item *,
353 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
354 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
355 extern void moan_write_from(FILE *);
356 extern void moan_write_references(FILE *, uschar *);
357 #ifdef LOOKUP_MODULE_DIR
358 //extern void mod_load_check(const uschar *);
360 extern FILE *modefopen(const uschar *, const char *, mode_t);
362 extern int open_cutthrough_connection( address_item * addr );
364 extern uschar *parse_extract_address(const uschar *, uschar **, int *, int *, int *,
366 extern int parse_forward_list(const uschar *, int, address_item **, uschar **,
367 const uschar *, const uschar *, error_block **);
368 extern uschar *parse_find_address_end(const uschar *, BOOL);
369 extern const uschar *parse_find_at(const uschar *);
370 extern const uschar *parse_fix_phrase(const uschar *, int);
371 extern const uschar *parse_message_id(const uschar *, uschar **, uschar **);
372 extern const uschar *parse_quote_2047(const uschar *, int, const uschar *,
374 extern const uschar *parse_date_time(const uschar *str, time_t *t);
375 extern void priv_drop_temp(const uid_t, const gid_t);
376 extern void priv_restore(void);
378 extern BOOL proxy_protocol_host(void);
379 extern void proxy_protocol_setup(void);
382 extern BOOL queue_action(const uschar *, int, const uschar **, int, int);
383 extern void queue_check_only(void);
384 extern unsigned queue_count(void);
385 extern unsigned queue_count_cached(void);
386 extern void queue_list(int, const uschar **, int);
387 #ifndef DISABLE_QUEUE_RAMP
388 extern void queue_notify_daemon(const uschar * hostname);
390 extern void queue_run(qrunner *, const uschar *, const uschar *, BOOL);
392 extern int random_number(int);
393 extern const uschar *rc_to_string(int);
394 extern int rda_interpret(redirect_block *, int, const uschar *,
395 const sieve_block *, const ugid_block *, address_item **,
396 uschar **, error_block **, int *, const uschar *);
397 extern int rda_is_filter(const uschar *);
398 extern BOOL readconf_depends(driver_instance *, uschar *);
399 extern void readconf_driver_init(driver_instance **, driver_info **, int,
400 void *, int, optionlist *, int, const uschar *);
401 extern const uschar *readconf_find_option(void *);
402 extern void readconf_main(BOOL);
403 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
404 extern BOOL readconf_print(const uschar *, const uschar *, BOOL);
405 extern uschar *readconf_printtime(int);
406 extern const uschar *readconf_readname(uschar *, int, const uschar *);
407 extern int readconf_readtime(const uschar *, int, BOOL);
408 extern void readconf_rest(void);
409 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
410 extern void readconf_save_config(const uschar *);
411 extern void read_message_body(BOOL);
412 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
413 extern BOOL receive_check_fs(int);
414 extern BOOL receive_check_set_sender(const uschar *);
415 extern BOOL receive_msg(BOOL);
416 extern int_eximarith_t receive_statvfs(BOOL, int *);
417 extern void receive_swallow_smtp(void);
418 extern int recv_fd_from_sock(int);
419 #ifdef WITH_CONTENT_SCAN
420 extern int regex(const uschar **, BOOL);
421 extern void regex_vars_clear(void);
423 extern void regex_at_daemon(const uschar *);
424 extern BOOL regex_match(const pcre2_code *, const uschar *, int, uschar **);
425 extern BOOL regex_match_and_setup(const pcre2_code *, const uschar *, int, int);
426 extern const pcre2_code *regex_compile(const uschar *, mcs_flags, uschar **,
427 pcre2_compile_context *);
428 extern const pcre2_code *regex_must_compile(const uschar *, mcs_flags, BOOL);
430 extern void retry_add_item(address_item *, const uschar *, int);
431 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
432 const uschar **, const uschar **);
433 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
434 extern const uschar *retry_host_key_build(const host_item *, BOOL,
436 extern BOOL retry_ultimate_address_timeout(const uschar *, const uschar *,
437 dbdata_retry *, time_t);
438 extern void retry_update(address_item **, address_item **, address_item **);
439 extern const uschar *rewrite_address(const uschar *, BOOL, BOOL, rewrite_rule *, int);
440 extern const uschar *rewrite_address_qualify(const uschar *, BOOL);
441 extern header_line *rewrite_header(header_line *,
442 const uschar *, const uschar *,
443 rewrite_rule *, int, BOOL);
444 extern const uschar *rewrite_one(const uschar *, int, BOOL *, BOOL, uschar *,
446 extern void rewrite_test(const uschar *);
447 extern uschar *rfc2047_decode2(uschar *, BOOL, const uschar *, int, int *,
449 extern int route_address(address_item *, address_item **, address_item **,
450 address_item **, address_item **, int);
451 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
452 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
453 extern BOOL route_findgroup(uschar *, gid_t *);
454 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
455 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
457 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
458 struct passwd **, uid_t *, uschar **);
459 extern void route_init(void);
460 extern gstring * route_show_supported(gstring *);
461 extern void route_tidyup(void);
462 extern uschar *router_current_name(void);
464 extern uschar *search_args(const lookup_info *, uschar *, uschar *, uschar **,
466 extern uschar *search_find(void *, const uschar *, const uschar *, int,
467 const uschar *, int, int, int *, const uschar *);
468 extern const lookup_info * search_findtype(const uschar *, int);
469 extern const lookup_info * search_findtype_partial(const uschar *, int *,
470 const uschar **, int *, int *, const uschar **);
471 extern void *search_open(const uschar *, const lookup_info *, int,
473 extern void search_tidyup(void);
474 extern BOOL send_fd_over_socket(int, int);
475 extern uschar *sender_helo_verified_boolstr(void);
476 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
477 extern void sha1_end(hctx *, const uschar *, int, uschar *);
478 extern void sha1_mid(hctx *, const uschar *);
479 extern void sha1_start(hctx *);
480 extern void sigalrm_handler(int);
481 extern void single_queue_run(qrunner *, const uschar *, const uschar *);
482 extern int smtp_boundsock(smtp_connect_args *);
483 extern void smtp_closedown(uschar *);
484 extern void smtp_command_timeout_exit(void) NORETURN;
485 extern void smtp_command_sigterm_exit(void) NORETURN;
486 extern void smtp_data_timeout_exit(void) NORETURN;
487 extern void smtp_data_sigint_exit(void) NORETURN;
488 extern void smtp_deliver_init(void);
489 extern uschar *smtp_cmd_hist(void);
490 extern int smtp_connect(smtp_connect_args *, const blob *);
491 extern int smtp_feof(void);
492 extern int smtp_ferror(void);
493 extern uschar *smtp_get_connection_info(void);
494 extern BOOL smtp_get_interface(uschar *, int, address_item *,
495 uschar **, uschar *);
496 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
497 extern int smtp_getc(unsigned);
498 extern uschar *smtp_getbuf(unsigned *);
499 extern void smtp_get_cache(unsigned);
500 extern BOOL smtp_hasc(void);
501 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
502 extern void smtp_log_no_mail(void);
503 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
504 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int, const uschar *) NORETURN;
505 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
506 extern void *smtp_reset(void *);
507 extern void smtp_respond(uschar *, int, BOOL, uschar *);
508 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
509 extern void smtp_port_for_connect(host_item *, int);
510 extern void smtp_send_prohibition_message(int, uschar *);
511 extern int smtp_setup_msg(void);
512 extern int smtp_sock_connect(smtp_connect_args *, int, const blob *);
513 extern BOOL smtp_start_session(void);
514 extern int smtp_ungetc(int);
515 extern void smtp_verify_feed(const uschar *, unsigned);
516 extern BOOL smtp_verify_helo(void);
517 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
518 #ifdef WITH_CONTENT_SCAN
519 extern int spam(const uschar **);
520 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
522 extern void spool_clear_header_globals(void);
523 extern BOOL spool_move_message(const uschar *, const uschar *, const uschar *, const uschar *);
524 extern int spool_open_datafile(const uschar *);
525 extern int spool_open_temp(uschar *);
526 extern int spool_read_header(uschar *, BOOL, BOOL);
527 extern uschar *spool_sender_from_msgid(const uschar *);
528 extern int spool_write_header(const uschar *, int, uschar **);
529 extern int stdin_getc(unsigned);
530 extern int stdin_feof(void);
531 extern int stdin_ferror(void);
532 extern BOOL stdin_hasc(void);
533 extern int stdin_ungetc(int);
535 extern void stackdump(void);
536 extern void store_exit(void);
537 extern void store_init(void);
538 extern void store_writeprotect(int);
540 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
541 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
542 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
543 extern gstring *string_append_listele_fmt(gstring *, uschar, BOOL, const char *, ...) WARN_UNUSED_RESULT;
544 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
545 extern uschar *string_base62_32(unsigned long int);
546 extern uschar *string_base62_64(unsigned long int);
547 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
548 extern int string_compare_by_pointer(const void *, const void *);
549 extern uschar *string_copy_dnsdomain(uschar *);
550 extern uschar *string_copy_malloc(const uschar *);
551 extern uschar *string_dequote(const uschar **);
552 extern uschar *string_format_size(int, uschar *);
553 extern int string_interpret_escape(const uschar **);
554 extern int string_is_ip_address(const uschar *, int *);
555 extern int string_is_ip_addressX(const uschar *, int *, const uschar **);
557 extern BOOL string_is_utf8(const uschar *);
559 extern const uschar *string_printing2(const uschar *, int);
560 extern uschar *string_split_message(uschar *);
561 extern uschar *string_unprinting(uschar *);
563 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
564 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
565 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
566 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
567 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
570 #define string_format(buf, siz, fmt, ...) \
571 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
572 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
573 const char *, ...) ALMOST_PRINTF(5,6);
575 #define string_vformat(g, flgs, fmt, ap) \
576 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
577 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
578 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
579 unsigned, unsigned, const char *, va_list);
581 #define string_open_failed(fmt, ...) \
582 string_open_failed_trc(US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
583 extern uschar *string_open_failed_trc(const uschar *, unsigned,
584 const char *, ...) PRINTF_FUNCTION(3,4);
586 #define string_nextinlist(lp, sp, b, l) \
587 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
588 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
589 const uschar * func, int line);
591 extern int strcmpic(const uschar *, const uschar *);
592 extern int strncmpic(const uschar *, const uschar *, int);
593 extern uschar *strstric(uschar *, uschar *, BOOL);
594 extern const uschar *strstric_c(const uschar *, const uschar *, BOOL);
596 extern int test_harness_fudged_queue_time(int);
597 extern void tcp_init(void);
598 #ifdef EXIM_TFO_PROBE
599 extern void tfo_probe(void);
601 extern void tls_modify_variables(tls_support *);
602 extern uschar *tod_stamp(int);
604 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
606 extern uschar *transport_current_name(void);
607 extern void transport_do_pass_socket(const uschar *, const uschar *,
608 const uschar *, uschar *, int);
609 extern void transport_init(void);
610 extern const uschar *transport_rcpt_address(address_item *, BOOL);
611 extern BOOL transport_set_up_command(const uschar ***, const uschar *,
612 unsigned, int, address_item *, const uschar *, uschar **);
613 extern void transport_update_waiting(host_item *, const uschar *);
614 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
615 extern void transport_write_reset(int);
616 extern BOOL transport_write_string(int, const char *, ...);
617 extern BOOL transport_headers_send(transport_ctx *,
618 BOOL (*)(transport_ctx *, const uschar *, int));
619 extern gstring * transport_show_supported(gstring *);
620 extern BOOL transport_write_message(transport_ctx *, int);
621 extern void tree_add_duplicate(const uschar *, address_item *);
622 extern void tree_add_nonrecipient(const uschar *);
623 extern void tree_add_unusable(const host_item *);
624 extern void tree_dup(tree_node **, tree_node *);
625 extern int tree_insertnode(tree_node **, tree_node *);
626 extern tree_node *tree_search(tree_node *, const uschar *);
627 extern void tree_write(tree_node *, FILE *);
628 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
630 #ifdef WITH_CONTENT_SCAN
631 extern void unspool_mbox(void);
634 extern gstring *utf8_version_report(gstring *);
637 extern int vaguely_random_number(int);
639 extern int vaguely_random_number_fallback(int);
641 extern int verify_address(address_item *, FILE *, int, int, int, int,
642 uschar *, uschar *, BOOL *);
643 extern int verify_check_dnsbl(int, const uschar **, uschar **);
644 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
645 uschar *, uschar *, int, int *);
646 extern int verify_check_headers(uschar **);
647 extern int verify_check_header_names_ascii(uschar **);
648 extern int verify_check_host(uschar **);
649 extern int verify_check_notblind(BOOL);
650 extern int verify_check_given_host(const uschar **, const host_item *);
651 extern int verify_check_this_host(const uschar **, unsigned int *,
652 const uschar*, const uschar *, const uschar **);
653 extern address_item *verify_checked_sender(const uschar *);
654 extern void verify_get_ident(int);
655 extern void verify_quota(uschar *);
656 extern int verify_quota_call(const uschar *, int, int, uschar **);
657 extern BOOL verify_sender(int *, uschar **);
658 extern BOOL verify_sender_preliminary(int *, uschar **);
659 extern void version_init(void);
661 extern BOOL write_chunk(transport_ctx *, const uschar *, int);
662 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
663 extern uschar *wrap_header(const uschar *, unsigned, unsigned, const uschar *, unsigned);
665 #ifdef EXPERIMENTAL_XCLIENT
666 extern uschar * xclient_smtp_command(uschar *, int *, BOOL *);
667 extern gstring * xclient_smtp_advertise_str(gstring *);
669 extern uschar *xtextencode(uschar *, int);
670 extern int xtextdecode(uschar *, uschar **);
673 /******************************************************************************/
674 /* Predicate: if an address is in a tainted pool.
675 By extension, a variable pointing to this address is tainted.
679 is_tainted(const void * p)
681 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
685 extern BOOL is_tainted_fn(const void *);
686 return is_tainted_fn(p);
691 is_incompatible(const void * old, const void * new)
693 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
697 extern BOOL is_incompatible_fn(const void *, const void *);
698 return is_incompatible_fn(old, new);
702 /******************************************************************************/
703 /* String functions */
704 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
706 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
707 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
709 return US strcat(CS dst, CCS src);
711 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
713 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
714 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
716 return US strcpy(CS dst, CCS src);
718 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
720 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
721 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
723 return US strncat(CS dst, CCS src, n);
725 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
727 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
728 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
730 return US strncpy(CS dst, CCS src, n);
732 /*XXX will likely need unchecked copy also */
735 /* Advance the string pointer given over any whitespace.
736 Return the next char as there's enough places using it to be useful. */
738 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
740 static inline uschar skip_whitespace(const uschar ** sp)
741 { while (isspace(**sp)) (*sp)++; return **sp; }
743 /* Ditto, non-whitespace */
745 #define Uskip_nonwhite(sp) skip_nonwhite(CUSS sp)
746 static inline uschar skip_nonwhite(const uschar ** sp)
747 { while (**sp && !isspace(**sp)) (*sp)++; return **sp; }
750 /******************************************************************************/
752 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
753 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
754 chown(<exim-uid>, <exim-gid>).
756 Probably because the idmapping is broken, misconfigured or set up in
757 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
758 case of misconfiguration, or if there are more such broken systems
759 out, I try to impose as least impact as possible and for now just write
760 a panic log entry pointing to the bug report. You're encouraged to
761 contact the developers, if you experience this issue.
763 fd the file descriptor (or -1 if not valid)
764 name the file name for error messages or for file operations,
769 returns 0 on success, -1 on failure */
772 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
774 return fchown(fd, owner, group)
775 ? exim_chown_failure(fd, name, owner, group) : 0;
779 exim_chown(const uschar *name, uid_t owner, gid_t group)
781 return chown(CCS name, owner, group)
782 ? exim_chown_failure(-1, name, owner, group) : 0;
784 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
786 /******************************************************************************/
787 /* String functions */
789 #if !defined(MACRO_PREDEF)
790 /*************************************************
791 * Copy and save string *
792 *************************************************/
794 /* This function assumes that memcpy() is faster than strcpy().
795 The result is explicitly nul-terminated.
798 static inline uschar *
799 string_copyn_taint_trc(const uschar * s, unsigned len,
800 const void * proto_mem, const char * func, int line)
803 unsigned slen = Ustrlen(s);
804 if (len > slen) len = slen;
805 ss = store_get_3(len + 1, proto_mem, func, line);
811 static inline uschar *
812 string_copy_taint_trc(const uschar * s, const void * proto_mem, const char * func, int line)
813 { return string_copyn_taint_trc(s, Ustrlen(s), proto_mem, func, line); }
815 static inline uschar *
816 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
817 { return string_copyn_taint_trc(s, len, s, func, line); }
818 static inline uschar *
819 string_copy_trc(const uschar * s, const char * func, int line)
820 { return string_copy_taint_trc(s, s, func, line); }
823 /* String-copy functions explicitly setting the taint status */
825 #define string_copyn_taint(s, len, proto_mem) \
826 string_copyn_taint_trc((s), (len), (proto_mem), __FUNCTION__, __LINE__)
827 #define string_copy_taint(s, proto_mem) \
828 string_copy_taint_trc((s), (proto_mem), __FUNCTION__, __LINE__)
830 /* Simple string-copy functions maintaining the taint */
832 #define string_copyn(s, len) \
833 string_copyn_trc((s), (len), __FUNCTION__, __LINE__)
834 #define string_copy(s) \
835 string_copy_trc((s), __FUNCTION__, __LINE__)
838 /*************************************************
839 * Copy, lowercase and save string *
840 *************************************************/
843 Argument: string to copy
844 Returns: copy of string in new store, with letters lowercased
847 static inline uschar *
848 string_copylc(const uschar * s)
850 uschar * ss = store_get(Ustrlen(s) + 1, s);
852 while (*s) *p++ = tolower(*s++);
859 /*************************************************
860 * Copy, lowercase, and save string, given length *
861 *************************************************/
863 /* It is assumed the data contains no zeros. A zero is added
868 n number of characters
870 Returns: copy of string in new store, with letters lowercased
873 static inline uschar *
874 string_copynlc(uschar * s, int n)
876 uschar * ss = store_get(n + 1, s);
878 while (n-- > 0) *p++ = tolower(*s++);
884 # ifndef COMPILE_UTILITY
885 /*************************************************
886 * Copy and save string in longterm store *
887 *************************************************/
889 /* This function assumes that memcpy() is faster than strcpy().
891 Argument: string to copy
892 Returns: copy of string in new store
895 static inline uschar *
896 string_copy_perm(const uschar *s, BOOL force_taint)
898 int old_pool = store_pool;
899 int len = Ustrlen(s) + 1;
902 store_pool = POOL_PERM;
903 ss = store_get(len, force_taint ? GET_TAINTED : s);
905 store_pool = old_pool;
912 /* sprintf into a buffer, taint-unchecked */
915 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
917 gstring gs = { .size = siz, .ptr = 0, .s = buf };
920 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
926 /******************************************************************************/
927 /* Growable-string functions */
929 /* Create a growable-string with some preassigned space */
931 #define string_get_tainted(size, proto_mem) \
932 string_get_tainted_trc((size), (proto_mem), __FUNCTION__, __LINE__)
934 static inline gstring *
935 string_get_tainted_trc(unsigned size, const void * proto_mem, const char * func, unsigned line)
937 gstring * g = store_get_3(sizeof(gstring) + size, proto_mem, func, line);
938 g->size = size; /*XXX would be good if we could see the actual alloc size */
944 #define string_get(size) \
945 string_get_trc((size), __FUNCTION__, __LINE__)
947 static inline gstring *
948 string_get_trc(unsigned size, const char * func, unsigned line)
950 return string_get_tainted_trc(size, GET_UNTAINTED, func, line);
953 /* NUL-terminate the C string in the growable-string, and return it. */
955 static inline uschar *
956 string_from_gstring(gstring * g)
964 len_string_from_gstring(gstring * g, uschar ** sp)
979 static inline uschar *
980 string_copy_from_gstring(gstring * g)
982 return g ? string_copyn(g->s, g->ptr) : NULL;
985 static inline unsigned
986 gstring_length(const gstring * g)
988 return g ? (unsigned)g->ptr : 0;
992 gstring_last_char(gstring * g)
994 return g && g->ptr > 0 ? g->s[g->ptr-1] : '\0';
998 gstring_trim(gstring * g, unsigned amount)
1004 gstring_trim_trailing(gstring * g, uschar c)
1006 if (gstring_last_char(g) == c) gstring_trim(g, 1);
1010 gstring_reset(gstring * g)
1016 #define gstring_release_unused(g) \
1017 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
1020 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
1022 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
1026 /* plain string append to a growable-string */
1028 static inline gstring * string_cat(gstring * g, const uschar * s)
1031 static inline gstring *
1032 string_cat(gstring * g, const uschar * s)
1034 return string_catn(g, s, Ustrlen(s));
1038 /* sprintf-append to a growable-string */
1040 #define string_fmt_append(g, fmt, ...) \
1041 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1042 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
1044 #define string_fmt_append_f(g, flgs, fmt, ...) \
1045 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1046 flgs, fmt, __VA_ARGS__)
1048 static inline gstring *
1049 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
1050 unsigned flags, const char *format, ...)
1053 va_start(ap, format);
1054 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
1061 /* Copy the content of a string to tainted memory. The proto_mem arg
1062 will always be tainted, and suitable as a prototype. */
1065 gstring_rebuffer(gstring * g, const void * proto_mem)
1067 uschar * s = store_get_3(g->size, proto_mem, __FUNCTION__, __LINE__);
1068 memcpy(s, g->s, g->ptr);
1072 /* Append one gstring to another */
1074 static inline gstring *
1075 gstring_append(gstring * dest, gstring * item)
1077 return item ? string_catn(dest, item->s, item->ptr) : dest;
1081 # ifndef COMPILE_UTILITY
1082 /******************************************************************************/
1083 /* Use store_malloc for DNSA structs, and explicit frees. Using the same pool
1084 for them as the strings we proceed to copy from them meant they could not be
1085 released, hence blowing 64k for every DNS lookup. That mounted up. With malloc
1086 we do have to take care over marking tainted all copied strings. A separate pool
1087 could be used and would handle that implicitly. */
1089 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
1091 static inline dns_answer *
1092 store_get_dns_answer_trc(const uschar * func, unsigned line)
1094 return store_malloc_3(sizeof(dns_answer), CCS func, line);
1097 #define store_free_dns_answer(dnsa) store_free_dns_answer_trc(dnsa, CUS __FUNCTION__, __LINE__)
1100 store_free_dns_answer_trc(dns_answer * dnsa, const uschar * func, unsigned line)
1102 store_free_3(dnsa, CCS func, line);
1106 /* Check for an RR being large enough. Return TRUE iff bad. */
1108 rr_bad_size(const dns_record * rr, size_t minbytes)
1110 return rr->size < minbytes;
1113 /* Check for an RR having further data beyond a given pointer.
1114 Return TRUE iff bad. */
1116 rr_bad_increment(const dns_record * rr, const uschar * ptr, size_t minbytes)
1118 return rr_bad_size(rr, ptr - rr->data + minbytes);
1121 /******************************************************************************/
1122 /* Routines with knowledge of spool layout */
1125 spool_pname_buf(uschar * buf, int len)
1127 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
1130 static inline uschar *
1131 spool_dname(const uschar * purpose, uschar * subdir)
1133 return string_sprintf("%s/%s/%s/%s",
1134 spool_directory, queue_name, purpose, subdir);
1138 static inline uschar *
1139 spool_q_sname(const uschar * purpose, const uschar * q, const uschar * subdir)
1141 return string_sprintf("%s%s%s%s%s",
1144 *subdir ? "/" : "", subdir);
1147 static inline uschar *
1148 spool_sname(const uschar * purpose, const uschar * subdir)
1150 return spool_q_sname(purpose, queue_name, subdir);
1153 static inline uschar *
1154 spool_q_fname(const uschar * purpose, const uschar * q,
1155 const uschar * subdir, const uschar * fname, const uschar * suffix)
1157 return string_sprintf("%s/%s/%s/%s/%s%s",
1158 spool_directory, q, purpose, subdir, fname, suffix);
1161 static inline uschar *
1162 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1163 const uschar * suffix)
1165 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1166 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1167 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1168 uschar * buf = store_get(len, GET_UNTAINTED);
1169 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1170 spool_directory, queue_name, purpose, subdir, fname, suffix);
1173 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1178 set_subdir_str(uschar * subdir_str, const uschar * name,
1179 int search_sequence)
1181 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1182 ? name[MESSAGE_ID_TIME_LEN-1] : '\0';
1183 subdir_str[1] = '\0';
1186 /******************************************************************************/
1187 /* Message-ID format transition knowlege */
1190 is_new_message_id(const uschar * id)
1192 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN] == '-';
1196 is_old_message_id(const uschar * id)
1198 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN_OLD] == '-';
1201 static inline unsigned
1202 spool_data_start_offset(const uschar * id)
1204 if (is_old_message_id(id)) return SPOOL_DATA_START_OFFSET_OLD;
1205 return SPOOL_DATA_START_OFFSET;
1208 /******************************************************************************/
1209 /* Time calculations */
1211 /* Diff two times (later, earlier) returning diff in 1st arg */
1213 timediff(struct timeval * later, const struct timeval * earlier)
1215 later->tv_sec -= earlier->tv_sec;
1216 if ((later->tv_usec -= earlier->tv_usec) < 0)
1219 later->tv_usec += 1000*1000;
1224 timesince(struct timeval * diff, const struct timeval * then)
1226 gettimeofday(diff, NULL);
1227 timediff(diff, then);
1230 static inline uschar *
1231 string_timediff(const struct timeval * diff)
1233 static uschar buf[16];
1235 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1236 return readconf_printtime((int)diff->tv_sec);
1238 snprintf(CS buf, sizeof(buf), "%u.%03us",
1239 (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1244 static inline uschar *
1245 string_timesince(const struct timeval * then)
1247 struct timeval diff;
1248 timesince(&diff, then);
1249 return string_timediff(&diff);
1253 report_time_since(const struct timeval * t0, const uschar * where)
1255 # ifdef MEASURE_TIMING
1256 struct timeval diff;
1257 timesince(&diff, t0);
1258 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1259 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1265 testharness_pause_ms(int millisec)
1267 #ifndef MEASURE_TIMING
1268 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1272 /******************************************************************************/
1273 /* Taint-checked file opens. Return values/errno per open(2). */
1276 exim_open2(const char *pathname, int flags)
1278 if (!is_tainted(pathname)) return open(pathname, flags);
1279 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1284 exim_open(const char *pathname, int flags, mode_t mode)
1286 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1287 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1291 #ifdef EXIM_HAVE_OPENAT
1293 exim_openat(int dirfd, const char *pathname, int flags)
1295 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1296 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1301 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1303 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1304 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1310 static inline FILE *
1311 exim_fopen(const char *pathname, const char *mode)
1313 if (!is_tainted(pathname)) return fopen(pathname, mode);
1314 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1320 exim_opendir(const uschar * name)
1322 if (!is_tainted(name)) return opendir(CCS name);
1323 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1328 /******************************************************************************/
1329 # if !defined(COMPILE_UTILITY)
1331 /* We use the PID of the head process for a connection-id. Note that
1332 this is only for tracking a received connection and what it directly
1333 causes; there is no inttent to describe transport-initiated TCP connections.
1334 The value is intented to be a cookie usable for logging, and we might change
1335 the generator for it at any time. */
1338 set_connection_id(void)
1340 connection_id = string_sprintf("%lu", (u_long)getpid());
1344 /* Process manipulation */
1347 exim_fork(const unsigned char * purpose)
1351 debug_printf_indent("%s forking for %s\n", process_purpose, purpose);
1352 if ((pid = fork()) == 0)
1354 f.daemon_listen = FALSE;
1355 process_purpose = purpose;
1356 DEBUG(D_any) debug_printf_indent("postfork: %s\n", purpose);
1360 testharness_pause_ms(100); /* let child work */
1361 DEBUG(D_any) debug_printf_indent("%s forked for %s: %d\n",
1362 process_purpose, purpose, (int)pid);
1369 child_open_exim(int * fdptr, const uschar * purpose)
1370 { return child_open_exim_function(fdptr, purpose); }
1373 child_open_exim2(int * fdptr, uschar * sender,
1374 uschar * sender_auth, const uschar * purpose)
1375 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1378 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1379 int *outfdptr, BOOL make_leader, const uschar * purpose)
1380 { return child_open_function(argv, envp, newumask, infdptr,
1381 outfdptr, make_leader, purpose);
1384 /* Return 1 if fd is usable per pollbits, else 0 */
1386 poll_one_fd(int fd, short pollbits, int tmo_millisec)
1388 struct pollfd p = {.fd = fd, .events = pollbits};
1389 return poll(&p, 1, tmo_millisec);
1392 /******************************************************************************/
1393 /* Client-side smtp log string, for debug */
1396 smtp_debug_cmd_log_init(void)
1398 # ifndef DISABLE_CLIENT_CMD_LOG
1399 int old_pool = store_pool;
1400 store_pool = POOL_PERM;
1401 client_cmd_log = string_get_tainted(56, GET_TAINTED);
1402 *client_cmd_log->s = '\0';
1403 store_pool = old_pool;
1409 smtp_debug_cmd(const uschar * buf, int mode)
1411 HDEBUG(D_transport|D_acl|D_v) debug_printf_indent(" SMTP%c> %s\n",
1412 mode == SCMD_BUFFER ? '|' : mode == SCMD_MORE ? '+' : '>', buf);
1414 # ifndef DISABLE_CLIENT_CMD_LOG
1416 int len = Ustrcspn(buf, " \n"), old_pool = store_pool;
1417 store_pool = POOL_PERM; /* Main pool ACL allocations eg. callouts get released */
1418 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf, MIN(len, 8));
1419 if (mode == SCMD_BUFFER)
1420 client_cmd_log = string_catn(client_cmd_log, US"|", 1);
1421 else if (mode == SCMD_MORE)
1422 client_cmd_log = string_catn(client_cmd_log, US"+", 1);
1423 store_pool = old_pool;
1429 /* This might be called both due to callout and then from delivery.
1430 Use memory that will not be released between those phases.
1433 smtp_debug_resp(const uschar * buf)
1435 # ifndef DISABLE_CLIENT_CMD_LOG
1436 int old_pool = store_pool;
1437 store_pool = POOL_PERM;
1438 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf,
1439 buf[3] == '-' ? 4 : 3);
1440 store_pool = old_pool;
1446 smtp_debug_cmd_report(void)
1448 # ifndef DISABLE_CLIENT_CMD_LOG
1449 if (client_cmd_log && *client_cmd_log->s)
1451 debug_printf("cmdlog: '%Y'\n", client_cmd_log);
1452 gstring_reset(client_cmd_log);
1455 debug_printf("cmdlog: (unset)\n");
1462 expand_max_rcpt(const uschar * str_max_rcpt)
1464 const uschar * s = expand_cstring(str_max_rcpt);
1466 return !s || !*s || (res = Uatoi(s)) == 0 ? UNLIMITED_ADDRS : res;
1469 /******************************************************************************/
1470 /* Queue-runner operations */
1473 is_onetime_qrun(void)
1475 return qrunners && !qrunners->next && qrunners->interval == 0;
1479 is_multiple_qrun(void)
1481 return qrunners && (qrunners->interval > 0 || qrunners->next);
1485 # endif /* !COMPILE_UTILITY */
1487 /******************************************************************************/
1488 #endif /* !MACRO_PREDEF */
1490 #endif /* _FUNCTIONS_H_ */
1494 /* End of functions.h */